Ingredients

1 3/4 cups (218g) plain flour

1 teaspoon baking soda

1 teaspoon cornflour

1/2 teaspoon salt

1/2 cup (113g) unsalted butter, melted

1/2 cup (100g) light brown sugar

1/2 cup (100g) granulated sugar

1 teaspoon vanilla extract

1 large egg

100g chocolate chips

Preparation

Preheat oven to 350F/176C. Line baking sheets with parchment paper or baking mats, set aside.

Place butter in a microwave safe bowl and heat for 30-45 seconds (full strength) or until it’s almost completely melted but has a few soft pieces left. In a large mixing bowl, whisk together flour, baking soda, cornflour, and salt.

In the bowl of a stand mixer (or a large mixing bowl with a hand mixer), beat together butter, sugars and vanilla for 1 minute. Add the egg and mix well. Turn mixing speed to low and gradually add in the dry ingredients. Beat until just combined or until a soft dough forms. Fold in the chocolate chips with a spatula. Now you can either bake the dough straight away, chill for 3 hours and bake, store in the refrigerator for up to 5 days or freeze it.

Roll the dough into 2oz balls, and place on the prepared baking mats. Bake for 11 - 13 minutes until the edges start to brown. Leave for about 5 minutes before transferring them to a wire rack.